[PATCH net-next] net: ethernet: ixp4xx: Fix return value check in ixp4xx_eth_probe()

[Wei Yongjun <weiyongjun1@xxxxxxxxxx>]

In case of error, the function mdiobus_get_phy() returns NULL
pointer not ERR_PTR(). The IS_ERR() test in the return value
check should be replaced with NULL test.

Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Wei Yongjun <weiyongjun1@xxxxxxxxxx>
---
 drivers/net/ethernet/xscale/ixp4xx_eth.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/xscale/ixp4xx_eth.c b/drivers/net/ethernet/xscale/ixp4xx_eth.c
index cb89323855d8..1ecceeb9700d 100644
--- a/drivers/net/ethernet/xscale/ixp4xx_eth.c
+++ b/drivers/net/ethernet/xscale/ixp4xx_eth.c
@@ -1531,8 +1531,8 @@ static int ixp4xx_eth_probe(struct platform_device *pdev)
 		phydev = of_phy_get_and_connect(ndev, np, ixp4xx_adjust_link);
 	} else {
 		phydev = mdiobus_get_phy(mdio_bus, plat->phy);
-		if (IS_ERR(phydev)) {
-			err = PTR_ERR(phydev);
+		if (!phydev) {
+			err = -ENODEV;
 			dev_err(dev, "could not connect phydev (%d)\n", err);
 			goto err_free_mem;
 		}